Abstract
This aim of this work is to present an analysis of the influence of impregnation against biological demand, realized with saline solution of CCB (Chromated Copper Borate preservative) by vacuum-pressure process, on physical-mechanical properties of tropical wood species Simarouba sp., Cedrelinga catenaeformis and Erisma uncinatum Warm. In theory, such process could increase the number of surface defects in wood pieces and reduce its strength properties. To investigate this influence, the complete species characterization was carried out in two conditions (without treatment and CCB treated wood). Tukey’s multiple comparisons test (5% significance level) was applied. In addition, scanning electron microscopy (SEM) photomicrographs were obtained with the energy dispersive spectroscopy (EDS) to investigate preservative presence at the cellular level. Results permitted to conclude that CCB impregnation process did not affect physical-mechanical properties of the studied species.
Highlights
Wood is a renewable material with physical-mechanical properties that allow its use in various purposes, such as construction, the furniture industry, energy production, paper and pulp
Timber pieces used to carry out this work were CCBtreated through vacuum-pressure process, in autoclave, with 12 up 14 atm, retention of 9.6kg of preservative/m3 of treated wood, in PREMA Tecnologia e Comércio Ltda in Rio Claro, Brazil
Splitting strength Toughness investigated in conditions without preservative treatment (Ref) and Chromated Copper Borate (CCB)-treated
Summary
Wood is a renewable material with physical-mechanical properties that allow its use in various purposes, such as construction, the furniture industry, energy production, paper and pulp. It has a strong ecological appeal, if proper management is employed in plantation zones[1,2]. Wood properties are changed due to physical, chemical, mechanical or biological agents, the latter being xylophagous organisms[2,9]. These organisms attack the natural polymers of wood cell walls, which act as sources of nutrition. Xylophagous organisms are able to contribute to drastic reduction of the values of strength of the wood, being factor of economic importance[2,9]
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